Setup GitHub Actions workflow for building and pushing runner image

Author: manekagunarathne

github/workflows/build.yml .github/workflows/build.ymlgithub/workflows/build.yml renamed to .github/workflows/build.yml

@@ -5,10 +5,13 @@ on:
     branches:
       - main
       - Dev
+      -week02-devops
+
   pull_request:
     branches:
       - main
       - Dev
+      -week02-devops
 
 jobs:
   # Frontend Build Job

.github/workflows/runner-image.yml

@@ -0,0 +1,32 @@
+name: Build & Push Runner Image
+
+on:
+  push:
+    paths:
+      - "runner/**"
+      - ".github/workflows/runner-image.yml"
+
+jobs:
+  build-runner:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Log in to GHCR
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+
+      - name: Build runner image
+        run: |
+          docker build \
+            -t ghcr.io/${{ github.repository_owner | toLower }}/nebula-runner:latest \
+            ./runner
+
+      - name: Push runner image
+        run: |
+          docker push ghcr.io/${{ github.repository_owner | toLower }}/nebula-runner:latest

backend/Dockerfile

@@ -35,6 +35,8 @@ RUN npm install --production
 
 COPY --from=builder /app/dist ./dist
 
+COPY --from=builder /app/workspaces-data ./workspaces-data
+
 # Set environment variables (optional, can be set in Render dashboard)
 
 ENV NODE_ENV=production

backend/README.md

@@ -109,7 +109,7 @@ Nest is [MIT licensed](https://github.com/nestjs/nest/blob/master/LICENSE).
 
 ```bash
 npm run start:dev
-curl http://localhost:4000/workspaces/demo-workspace/files/welcome-file | jq
+curl http://localhost:4000/workspaces/demo-workspace/files/-file | jq
 ```
 
 You should see the demo TypeScript file payload in the response and a corresponding `[HTTP] GET ... 200` log entry in the server console.

backend/src/app.controller.ts

@@ -9,4 +9,5 @@ export class AppController {
   getHello(): string {
     return this.appService.getHello();
   }
+
 }

backend/src/runner/docker.service.ts

@@ -1,6 +1,3 @@
-// src/runner/docker.service.ts
 import Docker from 'dockerode';
 
-export const docker = new Docker({
-  socketPath: '/var/run/docker.sock',
-});
+export const docker = new Docker({ socketPath: '/var/run/docker.sock' });

backend/src/runner/runner.controller.ts

@@ -9,7 +9,7 @@ export class RunnerController {
   @Post('spawn')
   async run() {
     const runId = randomUUID();
-    await this.runnerService.spawn('nebula-runner:week2', runId);
+    await this.runnerService.spawn('ghcr.io/hesara2003/nebula-runner:latest', runId);
     return { runId, status: 'running' };
   }
 }

backend/src/runner/runner.service.ts

@@ -7,7 +7,7 @@ export class RunnerService {
     const container = await docker.createContainer({
       Image: image,
       User: 'runner',
-      Cmd: ['timeout', '10s', 'node', 'index.js'],
+      Cmd: ['timeout', '10s', 'node', 'src/index.js'],
       Labels: { runId },
       HostConfig: {
         AutoRemove: true,
@@ -19,5 +19,10 @@ export class RunnerService {
 
     await container.start();
     return container;
+
+  }
+  catch (err) {
+    console.error('Failed to spawn container:', err);
+    throw err;
   }
 }

backend/src/storage/storage.service.ts

@@ -35,7 +35,7 @@ export class StorageService implements OnModuleInit {
         } catch {
             await fs.mkdir(workspacePath, { recursive: true });
             // Create a default file
-            await this.saveFile(workspaceId, 'src/welcome.ts', `// Welcome to NebulaCode workspace: ${workspaceId}\nconsole.log("Hello World");`);
+            await this.saveFile(workspaceId, 'welcome-file', `// Welcome to NebulaCode workspace: ${workspaceId}\nconsole.log("Hello World");`);
         }
     }
 

backend/workspaces-data/demo-workspace/welcome-file

@@ -0,0 +1,2 @@
+Welcome to the demo workspace!
+This is your starting file.